Device for effecting the radiation of heat.



No- 805,510. PATENTED NOV. 28, 1905. S. W. ZBNT.

DBVIGE FOR EPPEGTING THE RADIATION OF HEAT. Arrmcnmx nun 14411.16. 1904.

UNITED STATES PATENT OFFICE.

SOHUYLER W. ZENT, OF EVANSVILLE, INDIANA, ASSIGNOR TO THE ZENTAUTOMOBILE MANUFACTURING COMPANY, OF BELLE- FONTAINE, OHIO.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed March 16, 1904. Serial No. 198,509.

To all whom it may concern:

Be it known that I, SOHUYLER W. ZENT, a citizen of the UnitedStates,"residing at Evansville, county of Vanderburg, and State ofIndiana, have invented certain new and useful Improvements in Devicesfor Efiecting the Radiation of Heat, of which the following is aspecification.

My invention relates to amethod for effecting the rapid radiation ofheat from objects exposed to a high temperature, and especially toreducing the temperature of internal-combustion cylinders.

My object is to provide such means for accomplishing this result as willcombine lightness of weight with eflectiveness. I accomplish this resultby means of heat-conducting radiating-tubes, which are attached to andradiate from the surface of the cylinder. My invention is different fromthose now generally in use in, that while the others seek to accomplishthis object by simply acting as conductors of heat my inventionembodies, in addition, the use of tubes constructed and disposed so thatthere is a constant draft of air through the tubes and over the surfaceof the cylinder.

In the drawings forming a part hereof, Figure 1 is a front view of oneof my tubes. Fig. 2 is a side view of the same. Fig. 3 is a side view ofone of my tubes in position on the cylinder. Fig. 4 is a transversesection of the cylinder on line X X of Fig. 3, showing my tube before itis secured in place or bent; and Fig. 5 is the same, showing my tubesecured in position and bent.

In Fig. 1 my tube is illustrated, showing the hole A through same andthe flaring end B at the bottom. At the bottom of the tube the metal end0 is doubled over, thus providing extra metal for properly securing thetube in the aperture.

To apply my invention, I first make the proper dovetailed grooves D inthe cylinder. These grooves may be extended either around thecircumference of the cylinder or in any other direction I may desire. Ithen take my heat-conducting metal tubes and secure them in the groovesby tamping or pressing down the end C in such manner as to fill thegroove and hold the tubes firmly in place. I then bend the tubes back,as shown in Figs. 3 and 5. This bending is done in such manner as toallow the greatest possible current of air to pass through the tubes.

By the use of this invention I can place as many tubes in a cylinder asI desire and can bend them in any desired position.

While these tubes are made of heat-conducting metal and would therefore.cause a great amount of heat to be radiated from the cylinder, theirpeculiar construction, embodying the flared lower ends, makes them farmore effective and causes a constant draft from the cylinder to thesurrounding atmosphere, the

hole in the tube acting as does a flue.

Another advantage peculiar to this invention is that by having the lowerend of the tube spread or flared I bring more heat-conducting metal intoactual contact with v the cylinder than do the tubes now in use, andthis causes more heat to be radiated therefrom.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a device for effecting the radiation of heat, the combination witha surface, subject to heat effects, of open-ended heat-radiating tubeshaving one end flattened and broadened in a general crosswise directionthereof and secured by said end to the said surface.

2. In a device for effecting the radiation of heat, the combination witha surface, subject to heat effects, having recesses, of open-endedheat-radiating tubes having one end flattened and broadened in a generalcrosswise direction and secured by said end in said recesses.

3. In a device for effecting the radiation of heat, the combination witha surface, subject to heat effects, having recesses, of open-endedheat-radiating tubes having one end flattened and broadened in a generalcrosswise direction and received in said recesses and expanded or tampedtherein to secure the tubes by filling the recesses.

I. In a device for effecting the radiation of heat, the combination witha surface, subject to heat eflects, of heat-radiating tubes having oneend slit and spread to provide an air-open ing and secured to the saidsurface.

5. In a device for effecting the radiation of heat, the combination witha surface, subject to heat eifects, having recesses, of heat-radiatingtubes having flattened and bent ends received in said recesses andexpanded therein.

6. In a device for effecting the radiation of heat, the combination Witha surface, subject With flattened bent portions received in the I toheat effects, having recesses, of heat-radiatrecesses and expandedtherein. ing tubes having slit open ends provided With In testimonywhereof I hereunto affix my flattenaddprirtions received in the recessesand signature in the presence of two Witnesses. 5 expan e tierein. 1 r

7 In a device for effecting the radiation of SQHUYLER AENT' heat, thecombination With a surface, subject Witnesses: to heat efliects, havingundercut recesses, of F. C. GORE, open tubes having slit open endsprovided H. J. PIOHENPAUGH.

